Refractive Display Panel Layout for Front Light Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in achieving improved display quality, particularly in terms of light output efficiency, which is influenced by the shape and arrangement of optical structures.
Innovation Solution
A display device is designed with a display panel featuring a first refractive pattern having a specific refractive index and a planar shape with a center portion and a peripheral portion. This pattern defines a plurality of refractive openings, where a first refractive opening extends from the side of the center portion and a second refractive opening extends from the vertex of the center portion, arranged alternately. A second refractive layer with a lower refractive index is disposed on the first refractive pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional optical structure is used in the display device, then the device complexity is reduced, but the light output efficiency and display quality deteriorate
Solution Approach 1:
The optical structure is divided into multiple segments: a first refractive pattern layer with high refractive index material forming first refractive openings, and a second refractive layer with low refractive index material forming second refractive openings. This segmentation allows each layer to perform specific light control functions, improving overall light output efficiency while maintaining manageable complexity through modular design
Solution Approach 2:
Different regions of the optical structure are assigned different refractive indices: the first refractive pattern layer uses high refractive index material (n>1.5) for strong light bending at the pixel level, while the second refractive layer uses low refractive index material (n<1.5) for uniform light distribution. This local differentiation of optical properties optimizes light output efficiency without requiring uniform complexity throughout the entire structure
2Reliability
If the refractive openings are arranged in a single pattern, then the manufacturing process is simplified, but diagonal spots appear and display quality deteriorates
Solution Approach 1:
The refractive opening arrangement is segmented into two distinct patterns: first refractive openings in the first refractive pattern layer and second refractive openings in the second refractive layer. The first openings are configured to control light from sub-pixels, while the second openings are arranged to prevent diagonal spot formation. This segmentation of patterning functions improves display quality without requiring a single overly complex arrangement
Solution Approach 2:
The first and second refractive openings are designed with asymmetric characteristics relative to each other. The first refractive openings are positioned to align with sub-pixel arrangements, while the second refractive openings are positioned offset from diagonal lines connecting sub-pixels. This asymmetric arrangement between layers effectively prevents diagonal spots while maintaining manufacturing feasibility
3Illumination intensity
If only one refractive layer is used, then the manufacturing process is simplified, but front light efficiency is insufficient
Solution Approach 1:
The refractive structure is segmented into two functional layers: a first refractive pattern layer positioned closer to the light emitting elements for initial light direction control, and a second refractive layer positioned above it for additional light output enhancement. This segmentation of light control functions across multiple layers improves front light efficiency without creating an overly complex multi-layer structure
Solution Approach 2:
The refractive index parameter is changed between layers to optimize light control: the first refractive pattern layer uses high refractive index material (n>1.5) for strong light bending, while the second refractive layer uses low refractive index material (n<1.5) for light distribution. This parameter differentiation between layers enhances front light efficiency without requiring uniform complexity throughout the structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed solution enhances front light efficiency and effectively prevents the occurrence of diagonal spots, thereby improving overall display quality.
Implementation Method 1
a first refractive pattern disposed on the display panel, where the first refractive pattern has a first refractive index... a second refractive layer disposed on the first refractive pattern, where the second refractive layer has a second refractive index smaller than the first refractive index
Data Source
AI summary
A display device includes a display panel, a first refractive pattern disposed on the display panel, where the first refractive pattern has a first refractive index, has a planar shape including a center portion and a peripheral portion, and defines a plurality of refractive openings in which a first refractive opening whose peripheral portion extends from a side of the center portion and a second refractive opening whose peripheral portion extends from a vertex of the center portion are alternately arranged, and a second refractive layer disposed on the first refractive pattern, where the second refractive layer has a second refractive index less than the first refractive index.